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Finding the Fourth Proportional to 316,597.85, 436,905.21 and 171,403.67

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Solution

The fourth proportional to 316,597.85, 436,905.21 and 171,403.67 is: 236,537.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,597.85 : 436,905.21 = 171,403.67 : x
  2. Step 2: Convert to fraction form
    316,597.85/436,905.21 = 171,403.67/x
  3. Step 3: Cross multiply
    316,597.85x = 436,905.21 × 171,403.67
  4. Step 4: Simplify right side
    316,597.85x = 74,887,153,930.21
  5. Step 5: Solve for x
    x = 74,887,153,930.21/316,597.85
  6. Step 6: Final answer
    x = 236,537.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.